But Clinton told an activist in February that banning federal fossil fuel production is a “done deal.” Her campaign said she supports putting the U.S. on “a long-term path to a future where there is no extraction of fossil fuels on public lands,” and the Democratic Party platform endorses phasing down that production.

The U.S. Chamber of Commerce on Wednesday put out a report warning the federal government could lose billions of dollars in annual royalties if public fossil fuel production were to cease. Fossil fuel groups and Republicans have already seized on the report as ammunition against the movement.